Filter



(No Model.)

0. H. JEWELL.

FILTER.

No. 477,213. Patented June 21, 1892.

III

UNITED STATES PATENT OFFICE.

OMAR II. JEIVELII, OF CHICAGO, ILLINOIS.

FILTER.

SPECIFICATION forming part of Letters Patent No. 477,213, dated June 21, 1892.

Application filed September 14:, 1891- Serial No. 405,580. (No model.)

To all whom it 'mrtg concern.-

Be it known that I, OMAR II. JEWELL, a citizen of the United States, residing atChicago, 1n the county of Cook and State of Illinois, have invented certain new and useful Improvemen ts in Filters, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure l is a sidcelevation, a portion of one side being broken away. Fig. 2 is a central vertical cross-section; and Fig. 3 is a detail, being a partial sectional view on line 3 3 of Fig. 1.

My invention relates to filters, and more particularly to that class of filters which are adapted to be attached to a faucet to filter all the water which passes through the faucet.

The object of my invention is to provide an improved filter of the above description which will be simplein construction, efficient, and inexpensive. I accomplish this object as illustrated in the drawings and as hereinafter specified. That which I regard as new will be pointed out in the claim.

In the drawings, a indicates the filter.

1) indicates the cylindrical shell, which is adapted to hold the filtering material and which is made of brass or any other suitable metal. The shell I) is provided at a suitable point on its periphery with a boss 0, having a channel d for the passage of unfiltered water to the interior of the shell. The boss 0 is screw-threaded at its upper end to adapt it to be screwed upon a water-faucet. A rubher or leather washer c is placed in the upper end of the boss 0, in order that a watertight joint may be made when the filter is screwed upon the faucet.

f f indicate caps, which are adapted to screw upon the opposite ends of the cylindrical shell I), as best shown in Fig. 2.

9 indicates an annular flange formed centrally in the shell I) to form shoulders upon which the filtering material may rest.

7t 7t indicate disks of filtering material, which are adapted to fit into the shell Z) and to rest upon the shoulders formed by the flange g. The filtering substance is some fibrous material, preferably filter-paper.

The filtering material is held in position by means of perforated metal disks 7.; 7a, which fit into the shell b and are adapted to press the edges of the liltering material against the annular flange g. The disks k L are pro vided with perforations Z and with bosses m m. The bosses at m project centrally from the disks 7.: 71: and are adapted to bear against the inner surface of the capsff when said caps are screwed upon the shell I), as shown in Fig. 2. The arrangement is such that by screwing the caps upon the cylinder the disks 7s 7r may be held tightly upon the filtering material to prevent its being displaced. By this construction chambers 'iare formed at each end of the shell I), between the caps ff and the filtering material 72 h, which chambers serve as reservoirs to hold the filtered water. The flange 9 is of such width that when the filtering material and disks are in place a central unobstructed chamber a will be formed between them, and the channel or inlet-pipe d is so placed as to conduct the water into said chamber.

0 indicates an outlet-passage provided with a stop-cock p. The passage 0 leads from the central chamber a through the flange g of the shell I), and this passage 0 and cook or valve 1) are at the bottom of the shell opposite the inlet-channel (Z when the filter is in use. As the central chamber is unobstructed interiorly, the sediment or impurities collected in such chamber can be quickly washed out at any time by simply opening the cook or valve 1) and permitting the water to fiow in through the passage (1.

9- indicates a discharge-cock, which comm unicates with the chambers 1' through passages s s, as best shown in Fig. 3. The passages s s are so placed as to open into the lower portion of the chambers i.

The operation of my improved filter is as follows: The unfiltered water passes into the chamber a through the passage (1, and then filters through the filtering material into the chamber '11. It may then be drawn oif through the cock r. The impurities in the unfiltered water are deposited upon the inner surfaces of the disks 72 h. The impurities may be washed off of the disks by opening the cock 1), when the water will fiow through the chamber a and be discharged through the passage 0 and cock 1) without passing through the filter-paper. \Vhen it is desired to replace the filtering material with fresh filter-paper, the caps perforated disks k is, resting against the filtering material and having laterally-projecting bosses m m, bearing, respectively, against the screw-caps, so that by screwing up said caps the perforated disks are tightened against the annular flange, substantially as described.

- OMAR- H. JEWELL. Witnesses;

W. B. JOHNSON, JOHN G. CAHALA-N. 

